A usually temporary fit of rage to psychosis brought on by high thyroid hormones from Graves' Disease. Because of the hormonal cause, Graves' Rage can strike without warning and last more than 12 hours. People afflicted with bouts of Graves' Rage suffer symptoms of cynicism, anger, sarcasm, emotional hypersensitivity and brutal honesty. Due to the hormone imbalance, these incidents are not usually recognized by the afflicted while they are occurring.